private void StartImportingBasicBlock(BasicBlock basicBlock)
{
_stack.Clear();
EvaluationStack <StackEntry> entryStack = basicBlock.EntryStack;
if (entryStack != null)
{
int n = entryStack.Length;
for (int i = 0; i < n; i++)
{
_stack.Push(entryStack[i].Duplicate());
}
}
bool isFirstBlock = false;
if (_curBasicBlock.Equals(default(LLVMBasicBlockRef)))
{
isFirstBlock = true;
}
_curBasicBlock = GetLLVMBasicBlockForBlock(basicBlock);
LLVM.PositionBuilderAtEnd(_builder, _curBasicBlock);
if (isFirstBlock)
{
GenerateProlog();
}
}
private void ImportFallthrough(BasicBlock next)
{
EvaluationStack <StackEntry> entryStack = next.EntryStack;
if (entryStack != null)
{
if (entryStack.Length != _stack.Length)
{
throw new InvalidProgramException();
}
for (int i = 0; i < entryStack.Length; i++)
{
// TODO: Do we need to allow conversions?
if (entryStack[i].Kind != _stack[i].Kind)
{
throw new InvalidProgramException();
}
if (entryStack[i].Kind == StackValueKind.ValueType)
{
if (entryStack[i].Type != _stack[i].Type)
{
throw new InvalidProgramException();
}
}
}
}
else
{
if (_stack.Length > 0)
{
entryStack = new EvaluationStack <StackEntry>(_stack.Length);
#pragma warning disable 162 // Due to not implement3ed exception incrementer in for needs pragma warning disable
for (int i = 0; i < _stack.Length; i++)
{
// todo: do we need anything special for spilled stacks like cpp codegen does?
entryStack.Push(_stack[i]);
//entryStack.Push(NewSpillSlot(_stack[i]));
}
#pragma warning restore 162
}
next.EntryStack = entryStack;
}
if (entryStack != null)
{
// todo: do we have to do anything here?
#pragma warning disable 162// Due to not implement3ed exception incrementer in for needs pragma warning disable
for (int i = 0; i < entryStack.Length; i++)
{
/*AppendLine();
* Append(entryStack[i]);
* Append(" = ");
* Append(_stack[i]);
* AppendSemicolon();*/
}
#pragma warning restore 162
}
MarkBasicBlock(next);
}